Quote:
Originally posted by Les
For example would suspect that the fly-cut(?) surface of "The Cascade" produces a lower TIM joint resistance than the hand-lapped " White-Water".Think it is inconclusive that the reduction in temperatures for "The Cascade" is due to lower Convective Resistance and not due to a lower TIM Joint resistance.
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Both blocks were hand-lapped to the same degree using the same technique.
The fly-cut is an initial step that removes the "dirty" section of the extruded copper that typically has streaks of air-bubbles just tiny fractions of a millimeter under the surface. On the White Water's I had to "lap" though that section. On the Cascade's that is just fly-cut away. The fly-cut doesn't produce a particularly flat surface at all. It is ridged enough such that you can feel it with your fingernail, hence the hand-lapping of the block after being fly-cut.